Echange_impose_base.h

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#ifndef Echange_impose_base_included
#define Echange_impose_base_included
 
#include <Cond_lim_base.h>
#include <TRUSTTab.h>
 
/*! @brief Echange_impose_base: This boundary condition is used only for the energy equation.
 *
 *     It corresponds to imposing a heat exchange with the exterior
 *     of the domain by imposing an external temperature T_ext and an
 *     exchange coefficient h_imp.
 *     The flux term computed from the pair (h_imp, T_ext) is written:
 *                            h_t(T_ext - T_interior)*Surf
 *                           where h_t : global exchange coefficient.
 *     It appears on the right-hand side of the energy equation.
 *     Either the user provides an exchange coefficient corresponding
 *     only to the wall, in which case the program will compute the diffusion
 *     over the half-cell near the wall, or the user provides a global exchange
 *     coefficient that directly accounts for both the above.
 *     The two derived classes Echange_externe_impose and Echange_global_impose
 *     represent these two possibilities.
 *
 * @sa Cond_lim_base Echange_externe_impose Echange_global_impose
 */
class Echange_impose_base : public Cond_lim_base
{
  Declare_base_sans_constructeur(Echange_impose_base);
public:
 
  inline bool has_emissivite() const { return bool(emissivite_); }
  inline bool has_h_imp() const { return bool(h_imp_); }
 
  const DoubleTab& tab_T_ext(double temps=DMAXFLOAT) const;
  const DoubleTab& tab_h_imp(double temps=DMAXFLOAT) const;
  const DoubleTab& tab_emissivite(double temps=DMAXFLOAT) const;
  virtual double T_ext(int num) const;
  virtual double T_ext(int num,int k) const;
  virtual double h_imp(int num) const;
  virtual double h_imp(int num,int k) const;
  double emissivite(int num) const;
  double emissivite(int num,int k) const;
 
  /*! @brief Returns the T_ext field of temperature imposed at the boundary.
   *
   * @return (Champ_front_base&) the T_ext field of temperature imposed at the boundary
   */
  inline virtual Champ_front_base& T_ext() { return le_champ_front.valeur(); }
  inline virtual const Champ_front_base& T_ext() const { return le_champ_front.valeur(); }
 
  inline virtual Champ_front_base& h_imp() { assert (has_h_imp()); return h_imp_.valeur(); }
  inline virtual const Champ_front_base& h_imp() const { assert (has_h_imp()); return h_imp_.valeur(); }
 
  inline Champ_front_base& emissivite() {  assert (has_emissivite()); return emissivite_.valeur(); }
  inline const Champ_front_base& emissivite() const  {  assert (has_emissivite()); return emissivite_.valeur(); }
 
  // Used in the CAL of flux computation for wall laws
  virtual void liste_faces_loi_paroi(IntTab&) { }
 
  void mettre_a_jour(double ) override;
  int initialiser(double temps) override;
  int a_mettre_a_jour_ss_pas_dt() override { return 1; }
 
  // added method to avoid operating directly on champ_front
  void set_temps_defaut(double temps) override;
  void fixer_nb_valeurs_temporelles(int nb_cases) override;
  //
  void changer_temps_futur(double temps,int i) override;
  int avancer(double temps) override;
  int reculer(double temps) override;
  void associer_fr_dis_base(const Frontiere_dis_base& ) override ;
 
  virtual bool has_h_imp_grad() const { return false; }
  virtual double h_imp_grad(int num) const { Process::exit(que_suis_je()+ " : h_imp_grad must be overloaded !" ) ; return -1.e10 ;};
  virtual double h_imp_grad(int num,int k) const  { Process::exit(que_suis_je()+ " : h_imp_grad must be overloaded !") ; return -1.e10 ;};
 
protected :
  OWN_PTR(Champ_front_base) h_imp_, emissivite_ /* si Echange_externe_radiatif */;
private:
  // Stores all values on the faces (useful for GPU):
  mutable DoubleTab text_;
  mutable DoubleTab himp_;
  mutable DoubleTab eps_;
};
 
#endif /* Echange_impose_base_included */